[Where all classes are gone in 1.17?]

Most likely it's a problem with your workspace. Can you post a picture of your Referenced Libraries? If you don't see your libraries, then first check if you have  jdk 16. Then, go to your project directory and run the command gradlew refresh, or gradlew eclipse.

Hope it helps!

[[1.16.1] ItemGroup MISC v MATERIALS]

From my research,

ItemGroups MISC and MATERIALS are same. The reason causing the difference are the mappings. Both share the same instance. So, don't get confused.

[[SOLVED][1.16.5] Custom Biome not generating in overworld dimension]

Thanks a lot @Luis_ST and @UserMC123. My Biome is now generating in the overworld and the problem is solved.

[[SOLVED][1.16.5] Custom Biome not generating in overworld dimension]

2 minutes ago, UserMC123 said:

You can add biomes without json. this is how i do it

    public static final DeferredRegister<Biome> Mod_biomes = DeferredRegister.create(ForgeRegistries.BIOMES, test.MOD_ID);

    public static final RegistryObject<Biome> test_forest = Mod_biomes.register("test_forest",()-> TestForestBiome.makeTestForestBiome(0.4f,0.6f));

    public static final RegistryKey<Biome> TEST_FOREST_KEY = RegistryKey.create(Registry.BIOME_REGISTRY, new ResourceLocation(test.MOD_ID, "test_forest"));

    public static void addBiomesToOverworld() {
        BiomeManager.addBiome(BiomeManager.BiomeType.WARM, new BiomeManager.BiomeEntry(TEST_FOREST_KEY, 1));
    }

Hi UserMC123,

Thanks for your reply, but I actually know how to do this stuff. I am confused with the Custom Biome Class (In yours, I think it's TestForestBiome). It would be great if you could post your Custom Biome class in a Git repo or some other site.

[[SOLVED][1.16.5] Custom Biome not generating in overworld dimension]

Overall, I have made these changes to my Main (and only) class.

package com.hastev.biomes;


import net.minecraft.util.RegistryKey;
...

@Mod("tutorial")

public class Main {
	public static final RegistryKey<Biome> stony = RegistryKey.create(Registry.BIOME_REGISTRY, new ResourceLocation("tutorial", "tutorial_biome"));
	
	public Main() {
		IEventBus bus = FMLJavaModLoadingContext.get().getModEventBus();
	        bus.addListener(EventPriority.LOWEST, this::commonSetup);
	}

	public void commonSetup(FMLCommonSetupEvent e) {
		e.enqueueWork(() -> {
			BiomeManager.addBiome(BiomeType.COOL, new BiomeEntry(stony, 1));
			BiomeDictionary.addTypes(stony, Type.SANDY);
		}
		);
	}
	
}

And, Minecraft is now crashing with the errors:

1. java.lang.IllegalStateException: Unknown biome id emitted by layers: -1

 

Crash Report: https://pastebin.com/9nYUpA5v

 

[[SOLVED][1.16.5] Custom Biome not generating in overworld dimension]

Like this?

public void commonSetup(FMLCommonSetupEvent e) {
		e.enqueueWork(() -> {
			BiomeEntry entry = new BiomeEntry(stony, 1);
			BiomeManager.addBiome(BiomeType.COOL, entry);
			BiomeManager.addAdditionalOverworldBiomes(stony);
		}
		);

 

[[SOLVED][1.16.5] Custom Biome not generating in overworld dimension]

Here you go,

https://github.com/JustINCodingUK/Biome-Mod

[[SOLVED][1.16.5] Custom Biome not generating in overworld dimension]

Hi,

I am working on a mod which adds a custom biome to the overworld, the /locatebiome command lists my biome as well, but it shows that the type "tutorial:tutorial_biome"  cannot be found in "minecraft:overworld".

My Biome JSON file: https://pastebin.com/8QUJcSxJ

My Surface Builder JSON file: https://pastebin.com/hVJBEjSd

My Main.java File: https://pastebin.com/c288ptJ7

 

Also, please mention an alternative to extending the Biome class, as it's no longer possible. I am tired of JSONs.

Thanks in advance!